package cn.ustb.controller;
import java.io.IOException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * @author ljy
 */
@WebServlet("/logoutServlet")
public class LogoutServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        HttpSession session = request.getSession();
        session.removeAttribute("user");
        //使当前session失效
        session.invalidate();
        //跳转回登录页面
        response.sendRedirect(request.getContextPath() + "/login.jsp");
    }

}
